Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

• the most efficient way to navigate the Engineering ToolBox!

# Softwood Lumber - Standard Sizes

Softwood lumber standard sizes applied to boards, dimensional lumber and timber:

Softwood Lumber - Standard Sizes
ItemThicknessFace Widths
NominalMinimum DressedNominalMinimum Dressed
Dry
(max 19% moisture content)
(inches)
Green
(inches)
Dry
(max 19% moisture content)
(inches)
Green
(inches)
Boards       2 1 1/2 1 9/16
3 2 1/2 2 9/16
4 3 1/2 3 9/16
3/8 5/16 11/32 5 4 1/2 4 5/8
1/2 7/16 15/32 6 5 1/2 5 5/8
5/8 9/16 19/32 7 6 1/2 6 5/8
3/4 5/8 11/16 8 7 1/4 7 1/2
1 3/4 25/32 9 8 1/4 8 1/2
1 1/4 1 1 1/32 10 9 1/4 9 1/2
1 1/2 1 1/4 1 9/32 11 10 1/4 10 1/2
12 11 1/4 11 1/2
14 13 1/4 13 1/2
16 15 1/4 15 1/2
Dimension       2 1 1/2 1 9/16
2 1/2 2 2 1/16
3 2 1/2 2 9/16
2 1 1/2 1 9/16 3 1/2 3 3 1/16
2 1/2 2 2 1/16 4 3 1/2 3 9/16
3 2 1/2 2 9/16 4 1/2 4 4 1/16
3 1/2 3 3 1/16 5 4 1/2 4 5/8
4 3 1/2 3 9/16 6 5 1/2 5 5/8
4 1/2 4 4 1/16 8 7 1/4 7 1/2
10 9 1/4 9 1/2
12 11 1/4 11 1/2
14 13 1/4 13 1/2
16 15 1/4 15 1/2
Timbers 5 & 6 thick 1/2 off 1/2 off 5 & 6 wide 1/2 off 1/2 off
7 - 15 thick 3/4 off 1/2 off 7 - 15 wide 3/4 off 1/2 off
>= 16 thick 1 off 1/2 off >= 16 wide 1 off 1/2 off
• 1 in (inch) = 25.4 mm

## Related Topics

### • Material Properties

Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.

## Related Documents

### Angle Calculator - Carpenter's Square

Calculate angles with a straight board across carpenter's square.

### Board Feet Chart and Calculator

Board feet is used as a volume measurement of lumber.

### Fire Wood - the Cord

The cord unit for purchasing fuel wood.

### Hardwood and Softwood Species

Species of hardwood vs. softwood.

### Lumber - Surface Finishing

Lumber and surface finishing abbreviations.

### Lumber - Weights

Weights of green, kiln dried and pressure treated lumber boards.

### Miter Saw - Calculate Sawing Angle

Calculate miter saw protractor angles for skirting and decorative mouldings work.

Rough lumber, surfaced lumber (dressed), worked lumber, shop and factory lumber and yard lumber.

### Structural Lumber - Properties

Properties of structural lumber.

### Wood Species - Densities

Densities of various wood species - apple, ash, cedar, elm and more.

### Wood Species - Moisture Content and Weight

Weight of green and air-dried fire wood.

## Search Engineering ToolBox

• the most efficient way to navigate the Engineering ToolBox!

## SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!

## Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.